* System Analysis & Design*

 

i   Importance of system analysis & Design: - System Analysis & Design is an active field that requires continuous improvement in which a system analyst always looks for a new method for its enhanced (Accurate) effectiveness & efficiency.

v System Analysis: - It is the process of Collecting or interpreting facts, identifying the problem, and breaking down the system into single components.

v System Design: - It is the planning of a new business system or replacing an existing system by defining its component or module to satisfy the specific requirement.

: -System: - It is derived from the Greek word system which is to organize relations between setup components to achieve the goal.

c Concept of System: -

1.    Properties: - A system must have the following properties,

1.1  Organization: - A system must have organized in a specific structure and order.

1.2   Interaction: - A system must have structure and order which interact which each other for the desired outcome.

1.3   Interdependence: - A component in a system must for it which other component of the system to get the desire outcome.

1.4   Integration: - It is how the system component are connected together.

1.5   Central objective: -All system components must work together to reach a common goal.

2.    Element of system: - There are five major of a system they are­­­,

(i). Control.

(ii). Processor.

(iii). Input.

(iv). Output.

(v). Feedback.

                        A system also has boundaries and interfaces beyond which a system doesn’t extend.

 

 

              

                                                        Output & Input

1.    The main objective of a system is to produce the output from the user input.

2.    Inputs are the information that is given to the system for processing.

·       Output: -Output is the result or the outcome of the input that a user wants.

·       Processor: -It transforms the actual information of the input into the output.

ü It transforms the input totally or Partially into the output as a further requirement.

ü As the output requirement change with the processing capacity.

·       Control: -It guides the system it governs or controls the input, processor, and output activity. The behaviors of a computer system are controlled by the operating system.

·       Feedback: -It provides control in a dynamic system

There are two types of feedback Positive & Negative,

Positive is to tell the good about the system; negative is to tell the bad performance.

·       Environment: - It Is the super system in which the organization operates.